【摘要】 本文报道了非线性光学晶体Ca4 GdO(BO3) 3(GdCOB)的垂直Bridgman法生长。已获得直径2 5mm的高质量单晶。生长界面处的纵向温度梯度维持在 30～ 4 0℃ /cm ,生长速度 0 .2～ 0 .8mm/h。GdCOB晶体为二维成核的层状生长机制 ,易出现 (111)及 (2 0 1)解理面。讨论了影响生长的因素。保证原料配比准确和混料充分 ,减小温度波动和测温误差等是成功生长GdCOB晶体的重要因素。更多还原

【Abstract】 Vertical Bridgman growth of NLO crystal Ca 4GdO(BO 3) 3(GdCOB) is reported for the first time in the paper. GdCOB crystals in 25mm diameter have been grown at the rate of 0.2 0.8mm/h with temperature gradient of 30 40℃/cm on solid liquid interface.The growth mechanism of GdCOB crystal is two dimensional nucleation layer growth.The crystal has (111) and (201) cleavage in most ease.Several factors influencing the crystal growth are discussed.To ensure stochimetric ration of the feed material,reduce temperature vibration and temperature measuring error are very important for the success of crystal growth.更多还原